Windows 11 Firewall with Advanced Security flags up errors in “under development” code — but it’s nothing to worry about

It’s likely you’re aware that Windows 11 comes with its built-in Windows Firewall, which serves to safeguard users by denying unauthorized access to their computers, whether through the internet or a local network. This is done by malicious actors such as hackers. Essentially, it keeps track of both inbound and outbound network data, halting connections it considers harmful.

It appears that Microsoft encountered an unexpected problem affecting the advanced security feature of the Windows Firewall following the installation of the latest preview update for Windows 11 24H2, as reported by TechRadar.

According to the information provided by the software company in the “known issues” section of their Release Health Dashboard, there might be an error event linked to Windows Firewall with Advanced Security in your security event logs. This issue can be identified by a “Config Read Failed” message with the additional detail “More data is available.

Despite the device reboot causing this specific event to appear in Event Viewer, it doesn’t indicate a problem with the Windows Firewall and can be safely ignored. You should know that the Windows Firewall operates as expected, and no action needs to be taken to address or prevent this error event. This event is linked to a feature still in development and not yet fully functional. There’s no effect on any Windows processes related to this event.

Microsoft

Every time I reboot my device, there appears to be a recurring problem, as errors keep logging in the Event Log. Yet, Microsoft has eased my worries as Windows 11 users, by informing us that this issue isn’t cause for alarm. They suggest we can disregard it without any need to fret over potential system breakdowns.

The problem being encountered by the company is linked to a feature still under development and not yet fully integrated into the system, suggesting that Windows Firewall should operate smoothly without any complications affecting the core operations. Nevertheless, repeated occurrences in the Event Log may be inconvenient for seasoned users, particularly when monitoring specific system processes closely.

The problem has been addressed in the July 2025 Windows security update (KB5062553) and subsequent updates. We advise you to install the most recent update for your device as it incorporates crucial enhancements and issue resolutions, including this one.

By doing so, you’ll resolve the persistent issue by updating your Windows system to the security update from July 2025, or any subsequent patches. This action will not only eliminate the irritating bug but also clear your Event Log. Keep in mind that this update also brings along other enhancements, as is customary.

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2025-07-15 13:39